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Kecskemét, a significant regional hub in Bács-Kiskun county, Hungary, occupies a geographically strategic position within the Great Hungarian Plain (Alföld). Situated at approximately 46.9075° N, 19.6917° E, the city’s terrain is predominantly flat, characteristic of the Pannonian Basin, with an average elevation of around 130 meters above sea level. This flatness, while facilitating urban expansion, presents challenges for air quality dispersion, particularly during periods of atmospheric stability. Kecskemét lies relatively far from major mountain ranges, limiting natural air cleansing mechanisms. The surrounding landscape is dominated by intensive agricultural land – primarily cereal crops and sunflowers – contributing to potential particulate matter emissions from farming practices, especially during harvest seasons. To the south, the Kiskunság National Park offers a contrasting landscape of sand dunes and forests, though its influence on Kecskemét’s immediate air quality is limited by distance. The city’s proximity to the Danube River, approximately 60km to the north, doesn't significantly impact local air quality due to the distance and prevailing wind patterns. Historically, Kecskemét has developed as a trade and industrial center, with a growing automotive industry and food processing sector. This industrial activity, coupled with the agricultural belt surrounding the city, creates a complex interplay of pollution sources. The urban–rural gradient around Kecskemét is relatively gradual, meaning that rural pollutants can more easily infiltrate the urban environment, and vice versa, impacting overall air quality.

Kecskemét’s air quality experiences a distinct seasonal cycle heavily influenced by meteorological conditions. Spring (March-May) often sees elevated levels of pollen and dust, exacerbated by frequent wind shifts and occasional temperature inversions that trap pollutants near the ground. Agricultural activities, including ploughing and fertilizer application, also contribute to particulate matter during this period. Summer (June-August) generally offers improved air quality due to higher temperatures, increased convective mixing, and more frequent rainfall, which helps to wash pollutants from the atmosphere. However, heatwaves can lead to stagnant air and ozone formation. Autumn (September-November) presents a complex picture. Harvest season brings increased dust and smoke from agricultural burning, while cooler temperatures and decreasing sunlight can lead to temperature inversions, particularly in the mornings, trapping pollutants. Winter (December-February) is typically the most challenging season for air quality. Cold, stable air masses, frequent fog, and temperature inversions are common, leading to prolonged periods of poor air quality. Residential heating, often reliant on solid fuels, significantly contributes to particulate matter pollution during these months. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor activity during periods of fog and temperature inversions, particularly in the mornings. During harvest season, wearing a mask can reduce exposure to agricultural dust. Maintaining indoor air quality through ventilation and air purifiers is also advisable during periods of elevated pollution.